Example: Angular Bootstrap modal...<br><br>
    <button class="btn" ng-click="open()">Open me!</button>
    <div modal="shouldBeOpen" close="close()">
        <div class="modal-header">
            <h4>I'm a modal!</h4>
        </div>
        <div class="modal-body">
            with some content...
        </div>
        <div class="modal-footer">
            <button class="btn cancel" ng-click="close()">Cancel</button>
        </div>
    </div>
